int main()
{
  int a[2][5];
  a[0][0] = 0;
  a[0][1] = 1;
  a[0][2] = 2;
  a[0][3] = 3;
  a[0][4] = 4;
  a[1][0] = 0;
  a[1][1] = 1;
  a[1][2] = 2;
  a[1][3] = 3;
  a[1][4] = 4;
  a[0]-=a[1];    
}
